“To hurt (someone’s) feelings” means to cause someone to feel bad or sad about themselves. It is usually considered rude, because the words can easily make someone feel upset. Hurting someone’s feelings is generally an insensitive and mean thing to do.

This idiom is from LSI's book " Reading Connections" which is used in the level 3 Reading classes. For more information, please visit http://www.languagesystems.com/